US9608905B1 - Packet preamble and symbol boundary detection - Google Patents
Packet preamble and symbol boundary detection Download PDFInfo
- Publication number
- US9608905B1 US9608905B1 US14/333,444 US201414333444A US9608905B1 US 9608905 B1 US9608905 B1 US 9608905B1 US 201414333444 A US201414333444 A US 201414333444A US 9608905 B1 US9608905 B1 US 9608905B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
- H04L27/26526—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L2012/284—Home automation networks characterised by the type of medium used
- H04L2012/2843—Mains power line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2483—Traffic characterised by specific attributes, e.g. priority or QoS involving identification of individual flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
Abstract
Description
-
- !(avgNorm2<reg_sync_avgnorm_min
- ∥arFreq2<arFreqThd22
- ∥(arFreq1<arFreqThd21 && arFreq2<arFreqThd23)).
Thethird threshold conditions 810 help to ensure that the received signal has a suitable average input power and that the current and previous values of the auto-correlation value are suitably matched. If thethird threshold conditions 810 are met, then thestate machine controller 706 advances to state AR3_INIT. If secondreturn threshold conditions 812 are met, then thestate machine controller 706 returns to state AR0. In the example shown inFIG. 8 , the secondreturn threshold conditions 812 correspond to an inverted value of thethird threshold conditions 810. Other suitable conditions or values for the secondreturn threshold conditions 812 are utilized, according to various embodiments.
- !(avgNorm2<reg_sync_avgnorm_min
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/333,444 US9608905B1 (en) | 2013-07-19 | 2014-07-16 | Packet preamble and symbol boundary detection |
Applications Claiming Priority (2)
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US201361856369P | 2013-07-19 | 2013-07-19 | |
US14/333,444 US9608905B1 (en) | 2013-07-19 | 2014-07-16 | Packet preamble and symbol boundary detection |
Publications (1)
Publication Number | Publication Date |
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US9608905B1 true US9608905B1 (en) | 2017-03-28 |
Family
ID=58359606
Family Applications (1)
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US14/333,444 Active 2035-05-19 US9608905B1 (en) | 2013-07-19 | 2014-07-16 | Packet preamble and symbol boundary detection |
Country Status (1)
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US (1) | US9608905B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110646815A (en) * | 2019-10-24 | 2020-01-03 | 北京航空航天大学 | GNSS signal multipath parameter estimation method based on moving average FFT |
US10841217B2 (en) | 2018-05-25 | 2020-11-17 | Analog Devices Global Unlimited Company | Multi-packet protocol header detection |
EP4270826A1 (en) * | 2022-04-25 | 2023-11-01 | PCTEL, Inc. | Systems and methods for fast acquisition of a primary synchronization signal for 5g new radio network |
US20240039557A1 (en) * | 2022-07-26 | 2024-02-01 | Silicon Laboratories Inc. | Receiver with Duty Cycled Listening |
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US20010036221A1 (en) * | 2000-04-27 | 2001-11-01 | Nec Corporation | Path search circuit dividing a received signal into a plurality of FFT windows to reduce arithmetic operation processes for cross-correlation coefficients |
US20090161804A1 (en) * | 2007-12-21 | 2009-06-25 | Qualcomm Incorporated | Receiver window shaping in OFDM to mitigate narrowband interference |
US7813436B1 (en) | 2006-09-07 | 2010-10-12 | Marvell International Ltd. | Frame synchronization method and apparatus |
US20110014910A1 (en) * | 2009-07-20 | 2011-01-20 | Intellon Corporation | Channel reuse in communication systems |
US8331419B2 (en) | 2008-05-15 | 2012-12-11 | Marvell World Trade Ltd. | Efficient physical layer preamble format |
US8619922B1 (en) | 2002-02-04 | 2013-12-31 | Marvell International Ltd. | Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise |
US8711990B1 (en) | 2006-12-28 | 2014-04-29 | Marvell International Ltd. | Frame syncrhonization in orthogonal frequency-division multiplexing systems |
US8787505B1 (en) | 2006-05-31 | 2014-07-22 | Marvell International Ltd. | Preamble detection with multiple receive antennas |
US8824610B1 (en) | 2006-02-15 | 2014-09-02 | Marvell International Ltd. | Robust synchronization and detection mechanisms for OFDM WLAN systems |
US8837617B2 (en) | 2003-01-10 | 2014-09-16 | Marvell Hispania, S.L.U. | Process of synchronization in the time and frequency domain of multiple equipments in a transmission system with OFDM modulation |
US8842571B1 (en) | 2013-02-22 | 2014-09-23 | Marvell International Ltd. | Method and apparatus for determining a time of arrival of a data unit |
US8902726B1 (en) | 2008-08-18 | 2014-12-02 | Marvell International Ltd. | Frame synchronization techniques |
US8902798B2 (en) | 2008-04-08 | 2014-12-02 | Marvell World Trade Ltd. | Physical layer frame format design for wideband wireless communications systems |
US20140376540A1 (en) * | 2013-06-24 | 2014-12-25 | Jianqiang Zeng | Frequency-Domain Symbol And Frame Synchronization In Multi-Carrier Systems |
US8938016B1 (en) | 2012-09-18 | 2015-01-20 | Marvell International Ltd. | Fast identification of OFDM signal |
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2014
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US20010036221A1 (en) * | 2000-04-27 | 2001-11-01 | Nec Corporation | Path search circuit dividing a received signal into a plurality of FFT windows to reduce arithmetic operation processes for cross-correlation coefficients |
US8619922B1 (en) | 2002-02-04 | 2013-12-31 | Marvell International Ltd. | Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise |
US8837617B2 (en) | 2003-01-10 | 2014-09-16 | Marvell Hispania, S.L.U. | Process of synchronization in the time and frequency domain of multiple equipments in a transmission system with OFDM modulation |
US8824610B1 (en) | 2006-02-15 | 2014-09-02 | Marvell International Ltd. | Robust synchronization and detection mechanisms for OFDM WLAN systems |
US8787505B1 (en) | 2006-05-31 | 2014-07-22 | Marvell International Ltd. | Preamble detection with multiple receive antennas |
US7813436B1 (en) | 2006-09-07 | 2010-10-12 | Marvell International Ltd. | Frame synchronization method and apparatus |
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US8711990B1 (en) | 2006-12-28 | 2014-04-29 | Marvell International Ltd. | Frame syncrhonization in orthogonal frequency-division multiplexing systems |
US20090161804A1 (en) * | 2007-12-21 | 2009-06-25 | Qualcomm Incorporated | Receiver window shaping in OFDM to mitigate narrowband interference |
US8902798B2 (en) | 2008-04-08 | 2014-12-02 | Marvell World Trade Ltd. | Physical layer frame format design for wideband wireless communications systems |
US8331419B2 (en) | 2008-05-15 | 2012-12-11 | Marvell World Trade Ltd. | Efficient physical layer preamble format |
US8902726B1 (en) | 2008-08-18 | 2014-12-02 | Marvell International Ltd. | Frame synchronization techniques |
US20110014910A1 (en) * | 2009-07-20 | 2011-01-20 | Intellon Corporation | Channel reuse in communication systems |
US8938016B1 (en) | 2012-09-18 | 2015-01-20 | Marvell International Ltd. | Fast identification of OFDM signal |
US8842571B1 (en) | 2013-02-22 | 2014-09-23 | Marvell International Ltd. | Method and apparatus for determining a time of arrival of a data unit |
US20140376540A1 (en) * | 2013-06-24 | 2014-12-25 | Jianqiang Zeng | Frequency-Domain Symbol And Frame Synchronization In Multi-Carrier Systems |
Non-Patent Citations (23)
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10841217B2 (en) | 2018-05-25 | 2020-11-17 | Analog Devices Global Unlimited Company | Multi-packet protocol header detection |
CN110646815A (en) * | 2019-10-24 | 2020-01-03 | 北京航空航天大学 | GNSS signal multipath parameter estimation method based on moving average FFT |
EP4270826A1 (en) * | 2022-04-25 | 2023-11-01 | PCTEL, Inc. | Systems and methods for fast acquisition of a primary synchronization signal for 5g new radio network |
US20240039557A1 (en) * | 2022-07-26 | 2024-02-01 | Silicon Laboratories Inc. | Receiver with Duty Cycled Listening |
US11962325B2 (en) * | 2022-07-26 | 2024-04-16 | Silicon Laboratories Inc. | Receiver with duty cycled listening |
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